CN109705944A - A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof - Google Patents
A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof Download PDFInfo
- Publication number
- CN109705944A CN109705944A CN201910112187.7A CN201910112187A CN109705944A CN 109705944 A CN109705944 A CN 109705944A CN 201910112187 A CN201910112187 A CN 201910112187A CN 109705944 A CN109705944 A CN 109705944A
- Authority
- CN
- China
- Prior art keywords
- coal
- moulded
- preparation
- silicon
- briquette bond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The present invention is a kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof.A kind of coal briquette bond of industrial silicon furnace comprising: the mass ratio of organic component and inorganic component, the organic component and inorganic component is 3:3-5；The organic component is the cornstarch after gelatinization；The inorganic component is SILICA FUME.A kind of moulded coal and preparation method thereof of industrial silicon furnace is also disclosed in the present invention.The coal briquette bond of industrial silicon furnace of the present invention a kind of, moulded coal and preparation method thereof, the adhesive combined using inorganic+organic phase, inorganic matter is SILICA FUME, and organic matter is cornstarch, at low cost, will not be had an impact to metallic silicon product quality；By using adhesive, the non-serviceable foam coal of industrial silicon furnace is subjected to moulded coalification processing, becomes utilizable coal briquette, coal resource is comprehensively utilized, it is energy-saving, and compression strength is > 1000N after molding, it can satisfy the requirement that not damaged and silicon furnace burning normal use is transported in handling.
Description
Technical field
The invention belongs to colliery engineering fields, and in particular to a kind of coal briquette bond of industrial silicon furnace, moulded coal and its system
Preparation Method.
Background technique
In a foreseeable future, with the exhaustion of the energy such as petroleum, natural gas, coal will become again mondial
Main energy sources.Therefore, coal resourcesization utilize particularly important.
Silicon coal exploitation, transport, it is broken during can generate a large amount of silicon coal dust, silicon coal dust (is less than since partial size is small
1cm or less), it is not able to satisfy industrial silicon furnace manufacturing technique requirent (it is required that 3-5cm), the efficiency of combustion of scattered coal can be reduced, and smelt
Silicon enterprise lacks effective recovery and utilization technology to it, therefore a large amount of silicon coal dust is inexpensively stacked, taken out, and is occupied limited
Place and serious environmental pollution is caused, and causes region haze one of the main reasons.The silicon coal that production industrial silicon uses is former
Material, such as after selected, satisfactory silicon coal accounts for about 75%, cannot function as silicon coal there are also 20% or so powder and uses (remaining
For impurity, such as stone, gangue), the very big wasting of resources is caused, and industrial cost can be improved.
Coal dust, coal slime are exactly added inorganic or organic bond by a certain percentage, pass through molding machine after agitated by moulded coal
Tool is processed into honeycomb briquette, coal briquette, briquet.Coal slime etc. is not easy to the fuel directly used, becomes high-quality combustion after being processed into moulded coal
Material, not only reduce coal mine bulk deposition fine coal and coal slime caused by environmental pollution, also take full advantage of coal resources.
In order to make full use of existing coal resources and reduce the coal-fired pollution to environment, countries in the world all take much count of moulded coal
Research and development.Currently, shaped coal technology is all considered as the main composition of clean coal technology by some main producing coal states in the world
Part.Wherein, briquette binder is the key technology in moulded coal production.In order to produce the moulded coal of high quality, although adhesive
Have as many as hundreds of, but is suitble to the unmanned research of the coal briquette bond of industrial silicon furnace, therefore there is no referential experience.And work
Industry silicon furnace wants the content of strict control iron, aluminium, calcium metallic element with coal, otherwise will have an impact to metallic silicon product quality, together
Template coal adhesive must not also increase the content of the metallic elements such as iron in coal, aluminium, calcium.
In view of this, the present invention proposes a kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof.
Summary of the invention
The purpose of the present invention is to provide a kind of coal briquette bond of industrial silicon furnace, the bonding effect of the adhesive is good,
It is at low cost, and the using effect of manufactured moulded coal is not influenced.
To achieve the goals above, used technical solution are as follows:
A kind of coal briquette bond of industrial silicon furnace comprising: organic component and inorganic component, the organic component and
The mass ratio of inorganic component is 3:3-5；
The organic component is the cornstarch after gelatinization；
The inorganic component is SILICA FUME.
Further, the organic component and inorganic component 3:4.
Further, the fineness of the SILICA FUME is more than 100 mesh.
Further, the fineness of the organic component is 70-90 mesh.
It is another object of the present invention to provide moulded coal of a kind of industrial silicon furnace and preparation method thereof, which is used
Silicon pulverized coal preparation forms, and preparation method is simple, at low cost, and good back to using effect in industrial silicon furnace.
To achieve the goals above, used technical solution are as follows:
A kind of preparation method of the moulded coal of industrial silicon furnace, comprising the following steps:
It after the pretreatment of silicon coal dust, is uniformly mixed with coal briquette bond, then cold moudling, drying, obtains the moulded coal；
The coal briquette bond is coal briquette bond described in claim 1.
Further, the mass ratio of the silicon coal dust and coal briquette bond is 90-96:7.
Further, the mass ratio of the silicon coal dust and coal briquette bond is 93:7.
Further, the pretreatment are as follows: silicon coal dust is crushed, is sieved.
A kind of moulded coal of industrial silicon furnace, the moulded coal are prepared using above-mentioned preparation method.
Further, the compression strength of the moulded coal is greater than 1000N.
Compared with prior art, the beneficial effects of the present invention are:
1, the adhesive that the present invention is combined using inorganic+organic phase, inorganic matter are the byproduct of industrial silicon furnace production process,
Ingredient is silica, will not increase moulded coal impurity element, and at low cost；Organic matter is cornstarch, will not increase moulded coal
Impurity element, it is at low cost, metallic silicon product quality will not be had an impact.
2, by using adhesive of the invention, use can reach industrial silicon furnace after industrial silicon furnace after briquetting
Requirement reaches coal resource requirements of comprehensive utilization, and compression strength is > 1000N after molding, can satisfy handling transport and does not break
The requirement of damage and silicon furnace burning normal use.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of organic component in the coal briquette bond of industrial silicon furnace of the present invention；
Fig. 2 is the preparation technology flow chart of the moulded coal of industrial silicon furnace of the present invention.
Specific embodiment
In order to which the present invention is further explained, a kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof, reach
It is expected that goal of the invention, in conjunction with the preferred embodiment, to a kind of coal briquette bond of industrial silicon furnace proposed according to the present invention,
Moulded coal and preparation method thereof, specific embodiment, structure, feature and its effect, detailed description is as follows.In the following description,
What different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, specific in one or more embodiments
Feature, structure or feature can be combined by any suitable form.
Before elaborating a kind of coal briquette bond of industrial silicon furnace of the present invention, moulded coal and preparation method thereof, having must
The raw material and method etc. referred in the present invention is described further, to reach better effect.
The technique said in detail in the present invention is common process.
In the present invention cold moudling use molding equipment have: hydraulic standing molding machine, roller briquetting machine, it is hydraulic to roller at
Type machine etc..
Drying equipment employed in the present invention has warm library, chain-plate type drying tower and vertical drying kiln etc..
After having understood above-mentioned raw materials and method etc., below in conjunction with Fig. 1, Fig. 2 and specific embodiment to the present invention one
Coal briquette bond, the moulded coal and preparation method thereof for planting industrial silicon furnace are further described in detail:
One embodiment
Embodiment 1.
Specific steps are as follows:
(1) coal briquette bond is prepared:
After mixing by cornstarch and suitable water, extruding is ground into 70 mesh, obtains the organic component of adhesive.(work
Skill process is as shown in Figure 1)
The SILICA FUMEs of 100 mesh or more is weighed as inorganic component, by organic component and inorganic component according to the mass ratio of 3:3
It is uniformly mixed, obtains the coal briquette bond.
SILICA FUME in coal briquette bond plays the role of increasing intensity, so that the briquette strength of preparation is greater than 1000N,
Reach 1000-1500N.
(2) moulded coal (process flow is as shown in Figure 2) is prepared:
Silicon coal dust is pre-processed, i.e., silicon coal dust is crushed, after sieving processing, is transported to mixer；
Coal briquette bond prepared by step (1) is also transported to mixer, is uniformly mixed with silicon coal dust, can be added in right amount few
Measure moisture.The mass ratio of silicon coal dust and coal briquette bond is 96:7.
Material after mixing passes through molding equipment cold moudling again, is dried by drying equipment, and silicon coal briquette is obtained,
That is the moulded coal, and industrial evaluation is carried out, the compression strength of moulded coal is 1150N.
A kind of coal briquette bond of industrial silicon furnace, moulded coal described in the embodiment of the present invention and preparation method thereof, using nothing
The adhesive that machine+organic phase combines, inorganic matter is SILICA FUME, and organic matter is cornstarch, at low cost, will not be to metallic silicon product
Quality has an impact；By using adhesive, the non-serviceable foam coal of industrial silicon furnace is subjected to moulded coalification processing, becoming can benefit
Coal briquette comprehensively utilizes coal resource, energy-saving, and compression strength is > 1000N after molding, can satisfy handling transport not
Breakage and the requirement of silicon furnace burning normal use.
Embodiment 2.
Specific steps are as follows:
(1) coal briquette bond is prepared:
After mixing by cornstarch and suitable water, extruding is ground into 90 mesh, obtains the organic component of adhesive.(work
Skill process is as shown in Figure 1)
The SILICA FUMEs of 100 mesh or more is weighed as inorganic component, by organic component and inorganic component according to the mass ratio of 3:5
It is uniformly mixed, obtains the coal briquette bond.
(2) moulded coal (process flow is as shown in Figure 2) is prepared:
Silicon coal dust is pre-processed, i.e., silicon coal dust is crushed, after sieving processing, is transported to mixer；
Coal briquette bond prepared by step (1) is also transported to mixer, is uniformly mixed with silicon coal dust, can be added in right amount few
Measure moisture.The mass ratio of silicon coal dust and coal briquette bond is 90:7.
Material after mixing passes through molding equipment cold moudling again, is dried by drying equipment, and silicon coal briquette is obtained,
That is the moulded coal, and industrial evaluation is carried out, the compression strength of moulded coal is 1200N.
A kind of coal briquette bond of industrial silicon furnace, moulded coal described in the embodiment of the present invention and preparation method thereof, using nothing
The adhesive that machine+organic phase combines, inorganic matter is SILICA FUME, and organic matter is cornstarch, at low cost, will not be to metallic silicon product
Quality has an impact；By using adhesive, the non-serviceable foam coal of industrial silicon furnace is subjected to moulded coalification processing, becoming can benefit
Coal briquette comprehensively utilizes coal resource, energy-saving, and compression strength is > 1000N after molding, can satisfy handling transport not
Breakage and the requirement of silicon furnace burning normal use.
Embodiment 3.
Specific steps are as follows:
(1) coal briquette bond is prepared:
After mixing by cornstarch and suitable water, extruding is ground into 80 mesh, obtains the organic component of adhesive.(work
Skill process is as shown in Figure 1)
The SILICA FUMEs of 100 mesh or more is weighed as inorganic component, by organic component and inorganic component according to the mass ratio of 3:4
It is uniformly mixed, obtains the coal briquette bond.
(2) moulded coal (process flow is as shown in Figure 2) is prepared:
Silicon coal dust is pre-processed, i.e., silicon coal dust is crushed, after sieving processing, is transported to mixer；
Coal briquette bond prepared by step (1) is also transported to mixer, is uniformly mixed with silicon coal dust, can be added in right amount few
Measure moisture.The mass ratio of silicon coal dust and coal briquette bond is 93:7.
Material after mixing passes through molding equipment cold moudling again, is dried by drying equipment, and silicon coal briquette is obtained,
That is the moulded coal, and industrial evaluation is carried out, the compression strength of moulded coal is 1500N.
A kind of coal briquette bond of industrial silicon furnace, moulded coal described in the embodiment of the present invention and preparation method thereof, using nothing
The adhesive that machine+organic phase combines, inorganic matter is SILICA FUME, and organic matter is cornstarch, at low cost, will not be to metallic silicon product
Quality has an impact；By using adhesive, the non-serviceable foam coal of industrial silicon furnace is subjected to moulded coalification processing, becoming can benefit
Coal briquette comprehensively utilizes coal resource, energy-saving, and compression strength is > 1000N after molding, can satisfy handling transport not
Breakage and the requirement of silicon furnace burning normal use.
Embodiment 4.
Specific steps are as follows:
(1) coal briquette bond is prepared:
After mixing by cornstarch and suitable water, extruding is ground into 90 mesh, obtains the organic component of adhesive.(work
Skill process is as shown in Figure 1)
The SILICA FUMEs of 100 mesh or more is weighed as inorganic component, by organic component and inorganic component according to the mass ratio of 3:4
It is uniformly mixed, obtains the coal briquette bond.
(2) moulded coal (process flow is as shown in Figure 2) is prepared:
Silicon coal dust is pre-processed, i.e., silicon coal dust is crushed, after sieving processing, is transported to mixer；
Coal briquette bond prepared by step (1) is also transported to mixer, is uniformly mixed with silicon coal dust, can be added in right amount few
Measure moisture.The mass ratio of silicon coal dust and coal briquette bond is 94:7.
Material after mixing passes through molding equipment cold moudling again, is dried by drying equipment, and silicon coal briquette is obtained,
That is the moulded coal, and industrial evaluation is carried out, the compression strength of moulded coal is 1400N.
A kind of coal briquette bond of industrial silicon furnace, moulded coal described in the embodiment of the present invention and preparation method thereof, using nothing
The adhesive that machine+organic phase combines, inorganic matter is SILICA FUME, and organic matter is cornstarch, at low cost, will not be to metallic silicon product
Quality has an impact；By using adhesive, the non-serviceable foam coal of industrial silicon furnace is subjected to moulded coalification processing, becoming can benefit
Coal briquette comprehensively utilizes coal resource, energy-saving, and compression strength is > 1000N after molding, can satisfy handling transport not
Breakage and the requirement of silicon furnace burning normal use.
Two experiment tests
1, test content
The bonding effect of different adhesives, and preparation moulded coal combustion efficiency.
2, test material
Test material is as shown in table 1.
Table 1
3, test result
Test result is as shown in table 2.
Table 2
As shown in Table 2, from effect and economic analysis, the coal briquette bond effect for showing that the present invention uses is best.This hair
Organic component cornstarch in bright is at low cost, is easy to get, and SILICA FUME is the by-product for producing industrial silicon, cheap and easily-available, using jade
Adhesive made of rice starch+SILICA FUME proportion, bonding effect is good, and combustion efficiency is good, will not introduce new impurity, influence industrial silicon
Purity.
The above is only the preferred embodiment of the embodiment of the present invention, not makees any shape to the embodiment of the present invention
Limitation in formula, any simple modification to the above embodiments of technical spirit according to an embodiment of the present invention, equivalent variations
With modification, in the range of still falling within technical solution of the embodiment of the present invention.
Claims (10)
1. a kind of coal briquette bond of industrial silicon furnace, characterized in that it comprises: organic component and inorganic component, it is described
The mass ratio of organic component and inorganic component is 3:3-5；
The organic component is the cornstarch after gelatinization；
The inorganic component is SILICA FUME.
2. coal briquette bond according to claim 1, which is characterized in that
The organic component and inorganic component 3:4.
3. coal briquette bond according to claim 1, which is characterized in that
The fineness of the SILICA FUME is more than 100 mesh.
4. coal briquette bond according to claim 1, which is characterized in that
The fineness of the organic component is 70-90 mesh.
5. a kind of preparation method of the moulded coal of industrial silicon furnace, which comprises the following steps:
It after the pretreatment of silicon coal dust, is uniformly mixed with coal briquette bond, then cold moudling, drying, obtains the moulded coal；
The coal briquette bond is coal briquette bond described in claim 1.
6. preparation method according to claim 5, which is characterized in that
The mass ratio of the silicon coal dust and coal briquette bond is 90-96:7.
7. preparation method according to claim 6, which is characterized in that
The mass ratio of the silicon coal dust and coal briquette bond is 93:7.
8. preparation method according to claim 5, which is characterized in that
The pretreatment are as follows: silicon coal dust is crushed, is sieved.
9. a kind of moulded coal of industrial silicon furnace, which is characterized in that the moulded coal uses the described in any item systems of claim 5-8
Preparation Method is prepared.
10. moulded coal according to claim 9, which is characterized in that
The compression strength of the moulded coal is greater than 1000N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112187.7A CN109705944A (en) | 2019-02-13 | 2019-02-13 | A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112187.7A CN109705944A (en) | 2019-02-13 | 2019-02-13 | A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109705944A true CN109705944A (en) | 2019-05-03 |
Family
ID=66264263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910112187.7A Pending CN109705944A (en) | 2019-02-13 | 2019-02-13 | A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109705944A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719610A (en) * | 2022-04-13 | 2022-07-08 | 新疆东部合盛硅业有限公司 | Furnace building process combining novel carbon brick and cold ramming paste |
| CN114934143A (en) * | 2022-04-13 | 2022-08-23 | 新疆东部合盛硅业有限公司 | Novel taphole carbon block replacing process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320670A (en) * | 2000-04-22 | 2001-11-07 | 毕绪昌 | Binder for briquettes |
| CN102786054A (en) * | 2012-09-07 | 2012-11-21 | 昆明冶金研究院 | Method for reduction smelting of microsilica |
| CN104098099A (en) * | 2014-06-25 | 2014-10-15 | 中国科学院过程工程研究所 | Method utilizing waste carbon-containing pellets to smelt silicon |
| CN104140102A (en) * | 2014-06-25 | 2014-11-12 | 中国科学院过程工程研究所 | Adhesive for preparing silicon smelting waste carbon-containing pellet and preparation method of pellet |
| CN106219550A (en) * | 2016-07-25 | 2016-12-14 | 刘成成 | A kind of method utilizing industrial waste SILICA FUME to prepare industrial silicon and production system |
| CN107433279A (en) * | 2016-05-27 | 2017-12-05 | 成亚资源科技股份有限公司 | Useless silicon mud recycles processing method |
-
2019
- 2019-02-13 CN CN201910112187.7A patent/CN109705944A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320670A (en) * | 2000-04-22 | 2001-11-07 | 毕绪昌 | Binder for briquettes |
| CN102786054A (en) * | 2012-09-07 | 2012-11-21 | 昆明冶金研究院 | Method for reduction smelting of microsilica |
| CN104098099A (en) * | 2014-06-25 | 2014-10-15 | 中国科学院过程工程研究所 | Method utilizing waste carbon-containing pellets to smelt silicon |
| CN104140102A (en) * | 2014-06-25 | 2014-11-12 | 中国科学院过程工程研究所 | Adhesive for preparing silicon smelting waste carbon-containing pellet and preparation method of pellet |
| CN107433279A (en) * | 2016-05-27 | 2017-12-05 | 成亚资源科技股份有限公司 | Useless silicon mud recycles processing method |
| CN106219550A (en) * | 2016-07-25 | 2016-12-14 | 刘成成 | A kind of method utilizing industrial waste SILICA FUME to prepare industrial silicon and production system |
Non-Patent Citations (2)
| Title |
|---|
| 张安福等: "工业硅冶炼还原剂粉料冷压制团的实验研究", 《云南冶金》 * |
| 谢刚等: "《工业硅及硅铁生产》", 31 January 2016, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719610A (en) * | 2022-04-13 | 2022-07-08 | 新疆东部合盛硅业有限公司 | Furnace building process combining novel carbon brick and cold ramming paste |
| CN114934143A (en) * | 2022-04-13 | 2022-08-23 | 新疆东部合盛硅业有限公司 | Novel taphole carbon block replacing process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101767978B (en) | Manganese slag-solid waste mixed sintering brick making method | |
| CN104342552B (en) | A kind of composite adhesive for metallurgical briquetting and production method thereof | |
| CN105062583A (en) | Method for preparing gasification coal water slurry through matching of dried pulverized coal and semicoke | |
| CN102363218B (en) | Method for producing copper-powder-containing iron by reducing copper-containing furnace cinders directly | |
| CN101701289A (en) | Method for intensifying limonite sintering | |
| CN101407860B (en) | Cold press composite pellet binder | |
| CN105038891A (en) | Low-sulfur and environment-friendly coal and processing method thereof | |
| CN103881782A (en) | Fluidized-bed gasifier fly ash granules and production method thereof | |
| CN103979808A (en) | Cement admixture prepared from tungsten tailings and application of cement admixture | |
| CN109705944A (en) | A kind of coal briquette bond of industrial silicon furnace, moulded coal and preparation method thereof | |
| CN102417973A (en) | Addition process and system for sintering fuels | |
| CN105271850A (en) | Preparation method of cement base material composite admixture and cement base material containing composite admixture | |
| CN102503199B (en) | Compound coal ash for concrete | |
| CN103304207B (en) | Semidrying sintering desulfuration ash masonry dry powder and manufacture method thereof | |
| CN101921911A (en) | Pellet binder and preparation method thereof | |
| CN112408945A (en) | Iron tailing baked brick and preparation method thereof | |
| CN110451823B (en) | Process for preparing portland cement by using carbide slag and tailing slag and portland cement | |
| CN105819787A (en) | High strength concrete prepared from iron tailing | |
| CN101870565B (en) | Concrete compounded mineral admixture and preparation method thereof | |
| CN102173619A (en) | High-volume fly ash cement production technique and pulverizing technique | |
| CN103952167A (en) | Energy-saving and environment-friendly type low-moisture coking process and system | |
| CN110104971A (en) | A kind of clinker processing technology and clinker | |
| CN103468943A (en) | Cold-pressing pallet production process of chromium fine ore | |
| CN112646627A (en) | Granular briquette and preparation method thereof | |
| CN202045757U (en) | High-quality aggregate processing production equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190503 |
|
| RJ01 | Rejection of invention patent application after publication |